One of the key incentives behind hunting down exoplanets is to find alien worlds with qualities similar to Earth. But in the case of a newly discovered exoplanet orbiting a star only 16 light-years away, although astronomers may call it 'habitable' a...

An alien planet thought to be made largely of diamond may be less than glittering inside, new research shows. The notion of a diamond planet hinges on an abundance of carbon. A few years ago, scientists reported that the star at the center of a solar...

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